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Little fish import.


Sonnycbr
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I've added a couple of new plants to my Red Cherry set up recently and have just seen a little fish swimming about the bottom of the tank. It's only about 6mm long, spotted head and what looks like a pointy tail. The only way possible for it to have got in is either on the leaves of the plants or in the growing media. The plants are Subwassertang and a pot of grasses. It seems to be lurking about in or near the Subwassertang so I think that's the likely culprit. I'm not bothered about it, in fact it's pretty cool. Anyone else had this, or anyone guess at what it could be. Sorry, no chance of a photo, it's too small and quick.

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Maybe a newborn corydoras? That ticks all the boxes. They're an egg scattering species, so maybe there was an egg on the Subwassertang? It's super cool either way. I remember getting excited to see eggs on a crypt, when I first started fishkeeping. I thought they were fish eggs.... :( I coulda prevented my snail problems so easily then.

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I hope that’s what it is. I got a good look at it last night and it definitely could be. I’m amazed at it hatching after coming through the post. I’ll try and get a photo if it comes to the front of the tank. Thanks for the reply. 

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10 hours ago, sdlTBfanUK said:

Will be interesting to see what it turns out to be?

Simon

Its obviously found itself a little hideaway as I didn't see it for a while, but it popped out today when I fed the shrimp. Nothing in there to bother it and the water must suit it so  hopefully it'll grow to maturity.

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  • 2 weeks later...

Well, here's the fish in question. Sorry about the picture quality, I have a tremor and it's very hard for me to hold a camera steady. It certainly looks like a Corydora to me. It's out in the open a bit now. It's still only about an inch long but looks as though it's thriving among the shrimp. I'm assuming it'll be a safe tank mate for them. Just got to grow it on a bit now.

IMG_6941.JPG

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Aww it’s very cute. 100% looking like a corydoras, so it should be a pretty safe tank mate for the shrimp. And the picture quality is fine, no worries. 

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You were lucky, that is a  corydora and they are shrimp safe, not sure how big it will get but it is fine for the near future anyway! It's growing well and looks very healthy!

Hope everything else is going well? Are you still using the Zerowater filter jug and remineraliser?

Simon

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Thanks Simon, I now use RO water and mineraliser. I’ve got absolutely loads of babies so it’s working well. I’ve kept Corys before and they’ve all been small so I don’t think he’ll be a threat to young shrimp apart from sharing a bit of their food. 

10 hours ago, Crabby said:

Aww it’s very cute. 100% looking like a corydoras, so it should be a pretty safe tank mate for the shrimp. And the picture quality is fine, no worries. 

Honestly, I’m delighted that he survived as a little egg and he’s now safe. He should have a good life with his little shrimp mates. 

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23 minutes ago, Sonnycbr said:

I’m delighted that he survived as a little egg and he’s now safe. He should have a good life with his little shrimp mates. 

Well done. It survived because you are a good fish keeper.

Now to find it some friends of it's own kind.

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I started emptying my nano tank today, I've been transferring my shrimp to the new set up for a few weeks now. I took out a large clump of Christmas moss that I had in there and placed it in a dish of aquarium water to see if anything was still in it. I was amazed at the number of baby shrimp that were in it. I put them in their new home and thought that was that. I went back a short while later and looked under the moss and there was another lot of babies. I've just checked for the third time and found the two smallest shrimp that I've seen in my life. I expected them to start small, but these are miniscule. I didn't want to put the moss directly into the new tank as it's also hiding a lot of snails.

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Many people don't realise how tiny the shrimplets are when born, and usually clear! They grow fairly quickly early on and usually they are probably nearly two weeks to a month old when the are first seen in the aquarium.

I would consider getting a few assassin snails to keep the tank free from other snails, as they are readily available in the UK, and don't breed as quickly as other snails. I only have to remove some to keep numbers down about once a year! I have them in all my tanks! They are quite pretty as well.

Simon

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10 hours ago, sdlTBfanUK said:

Many people don't realise how tiny the shrimplets are when born, and usually clear! They grow fairly quickly early on and usually they are probably nearly two weeks to a month old when the are first seen in the aquarium.

I would consider getting a few assassin snails to keep the tank free from other snails, as they are readily available in the UK, and don't breed as quickly as other snails. I only have to remove some to keep numbers down about once a year! I have them in all my tanks! They are quite pretty as well.

Simon

Thanks for the advice Simon. I'll certainly order some of the assassin snails, would they be ok with Malawi Cichlids? I tend to overfeed my Cichlids slightly to keep them in breeding colours and the snails are everywhere.

Sonny

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They will be fine with anything, aside from other snails of coarse. I'm sure they will help with algae and  excess food as well. If I want to get some out I put an algae wafer in the tank and they are on it like a rugby scrum!

I have given some to a friend in the past, and he just bought some fancy snails, I said to him,  I hope all those assassins I gave you have died then? The next morning he had two empty fancy snail shells in the tank......

Simon 

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5 hours ago, sdlTBfanUK said:

They will be fine with anything, aside from other snails of coarse. I'm sure they will help with algae and  excess food as well. If I want to get some out I put an algae wafer in the tank and they are on it like a rugby scrum!

I have given some to a friend in the past, and he just bought some fancy snails, I said to him,  I hope all those assassins I gave you have died then? The next morning he had two empty fancy snail shells in the tank......

Simon 

Cheers Simon. Do the assassins breed like  the live bearing  ones I’ve got? I’ve seen them on eBay but if they breed quickly I’ll just buy 5 or 10. 

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5 or 10 will be plenty. They do breed but nowhere near as rapidly as the malaysian trumpets etc. I have a clear out once a year and just put an algae wafer in the tank which brings them out. As they are easy to see, and therefore/also catch they have never been a problem in my tanks in the 5+ years I have had them! I only had to buy the one lot as well as they breed in freshwater, so have never had to restock either.

Just had an email from my friend and they got another of his fancy snails.......... even though the fancy snails are ten times the size!

Simon 

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    • sdlTBfanUK
      You may end up losing this batch entirely but then you can start completely fresh and get the aquarium set up right for the next batch of shrimp! If you do any large water changes then try and add the new water slowly, either dripper or some other way. You should get yourself a TDS meter (as JayC above), they are cheap and readily available. You should always use a GH tester kit as well with shrimps, if you do the 50% water change that should halve the GH so you should get a reading after that, or if you can get a local fish store to test it for you that will give you an idea of the GH. If your water supply is as hard as it appears it may be you will need to mull over how (or even IF) you want to keep shrimps as that may mean using RO or distilled/bottled water and buying a proper shrimp specific remineraliser? That will be quite expensive but you won't then have to mess about adding crushed coral/eggshells etc, but only you can decide whether you want to do/spend that much etc? If you live somewhere that gets a lot of rain, then you can use rain water? Also, as JayC states, you need to know what you are using/adding to the water and aquarium, ie fertilizers, rocks. Unless you have very exotic plants you shouldn't need any fertilizers. Just as a note, we have come across quite a few experienced fish keeprs that have this sort of start off issues with shrimp. Shrimp are more difficult than fish, and the aquarium and water etc need to be ready and within the required parameters before getting the shrimps. Usually people jump in, get the shrimps before everything is ready/sorted. Hopefully though you will keep at it, or if this lot die you will have another go and we can help you get it sorted?
    • jayc
      These are all classic symptoms of shrimp moulting problems.   Again, another high GH symptom. High GH not only causes harder carapace (shell), but it also makes eggs harder. When the egg is harder the male finds it more difficult to fertilise the eggs.   That's a worry if you can't get a good GH reading because that is going to be most likely issue right now for you.   Because snails don't moult.    If you dont already have a TDS meter, I suggest getting one asap. It's another test to narrow down your water parameters, and not have to trust one test by it's own - in this case the GH test kit. I would wager your water parameter is too high in dissolved minerals - likely from the tap water source, fertiliser dosing and/or any rocks/crushed corals you might have in the tank. To remedy this, you need to start doing water changes with RO, distilled or rain water immediately. I would do a 50% water change with RO water asap. Then look for sources that increase GH in the tank and eliminate it - fertilisers, rocks, crush corals, shells.    It's difficult to save a shrimp who's carapace is already too hard, but hopefully any younger shrimps will benefit from the water change and the reduced GH.   Good luck and keep us updated.
    • professionalshrimphugger
      United States. I have tested my tap water; it yields the same results. GH: ??, KH: 3, pH: 7.8. I cannot say for sure if my GH test is faulty or not, the expiration is until 2023. It's more of a twitching, then stasis. I have one shrimp that's having a hard time balancing itself, but it's swimmerets and mouth keep moving in attempt in getting back up. I allowed it to stick to my sponge filter. The tank is cycled. I used established media. Readings would not show 0 otherwise. I do use EI Dosing, half dosage recommended for a 20 gallon. It has been said on other forums that it does not affect shrimp, but I stopped dosing to isolate variables a week ago. No CO2, that's too costly for me, hah. I drip acclimated the shrimp for 2 hours, 1 drop per second. I tested for copper in my tank, nothing. Funnily enough, my mystery snails in my community tank don't seem too affected by it.
    • sdlTBfanUK
      Sorry to hear you are having a problem! Where are you based in the world? Can you test your tapwater GH/KH/PH? Best to know what the source water is, dechlorinated (if required) before you have ADDED anything. Are you sure the GH test is working and not old, or already activated/contaminated somehow? The other parameters seem ok! If the GH is as ridiculousy high as you say then I expect the shrimps would have problems molting (they may be twitching to get out of the old shell), though generally twitchy behaviour is usually down to some sort of toxic poisoning or the aquarium not being properly cycled? Are you using any plant fertiser or CO2?  Did you drip acclimate the shrimp over many hours before adding them to the aquarium? They are much more sensitive than fish to changes in water parameters etc. You could end up killing more of them by moving them so I would hold off from that at the moment!  
    • professionalshrimphugger
      Hello all, I am new to the forum, although experienced at fishkeeping, I am relatively new to shrimpkeeping. Let's start with my issue. I had started a colony of 18 juvenile cherry shrimp (Neocaridina davidi) in a 20 gallon long as of last month. I solely use tap water and change 5% per week. They are the only inhabitants alongside a single juvenile Malaysian trumpet snail. Today the numbers have been reduced to 9. The deaths did not start until the shrimp turned into adults, where they have struggled, twitching as if provoked, becoming lethargic, and eventually flipping over to their side and dying. Only the ones on the verge of death exhibit this behavior, whereas the rest simply graze on as usual. I measured my parameters today - my tank has been established for two months as of now and is densely planted. They have never bred despite being of adult size and having visible saddles. Never an issue with molting. Ammonia: 0 ppm, Nitrite: 0 ppm, Nitrate: 0-5 ppm || pH: 7.8, GH: ??, KH: 3 I cannot get a single good read off API's liquid GH test. I have dropped beyond 30+ and gave up as I knew the numbers were already extreme. The thing is, I need a temporary, inexpensive solution to keep my shrimp safe. I believe by the time I order supplies, the colony would already give. I was planning on moving the colony to a 5.5g, barren with my floating plants and mosses, using just distilled water, Seachem Equilibrium (only GH additive I own) and crushed eggshells (potential source of KH). Possibly crushed coral to substitute for the lack of any real mineral additive. I did not believe that high GH would possibly become a problem, and I am fortunate that the strugglers are still alive. If anyone has a solution to this problem, or approve of my plan of action, please let me know. TIA
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